Pneumatic power unit for sander



FIG. 1 is a side elevation of a pneumatic power unit for sander;

FIG. 2 is an end elevation;

FIG. 3 is an opposite end elevation;

FIG. 4 is the opposite side elevation;

FIG. 5 is a top plan view; and

FIG. 6 is a bottom plan view. 

The ornamental design for a pneumatic power unit for sander, as shown. 